The video shows a masked man entering the Maple Street Market on Tuesday morning and pointing a gun at the clerk before demanding he clean out the register and forcing him to the ground.

"The guy just walked in and said, 'Give me money, give me money,' I thought it was a fake gun," Choudhary Khan said.

The clerk said at first, he thought the gun was a toy, but he quickly realized it wasn't.

"I see the gun is real, and then I said, 'Here's the money,' and he said, 'Lie down. Put your face down,'" Khan said.

Khan said the man put the gun to his head a second time when he demanded that he get down on the ground after opening the register.

Surveillance video shows the armed man leaving the store while dropping some of the money he had just stolen. He then fled on foot into an alley behind the store.

"The fact that he walks right into the store very aggressively, immediately brandishing that firearm and pointing it at the individual, he certainly was aggressive with his tactics," said Lt. Maureen Tessier, of the Manchester Police Department.

Police said the man was wearing gloves and a mask over his face, but they're hoping someone recognizes him from the surveillance video. The man was last seen wearing a plain black or grey hooded sweatshirt and dark, long pants. He also appeared to be wearing a watch on his right wrist.

Khan also told police that the armed man spoke with an accent.

The clerk said in the eight years his family has owned the store, there has never been an incident like this, but he said it won't keep him from doing his job.

"Of course it's going to be scary, but what are you going to do? If it happens, it happens," Khan said.

Manchester police are asking anyone with information to give them a call at 603-668-8711.